There is a refrigerator in a perfectly insulated room. The door is then opened. Is it an open or closed system? After a long time has passed, has the temperature in the room increased or decreased?
Product Engineer Interview Questions
6,962 product engineer interview questions shared by candidates
Show me the back of an iPhone and asked me how it might have been manufactured.
If I have a solid rod and hollow rod with the same mass and I let them slide in a ramp. Which one reaches the bottom first and why?
You have 5kg of Aluminum and 5kg of Steel. You can make whatever cross section beam you want with these materials. If you have to make a cantilever beam 1m long with a load at the end. And you want to minimize the deflection. What material would you use?
If you and a large brick are in a boat floating in a pool, will the water level rise or fall when the brick is tossed into the water? What if the brick is a large piece of Styrofoam and thrown into the water?
The most unexpected question was to write a program that would take a 3x3 matrix and move around the values. [[1 2 3][4 5 6][7 8 9]] -> [[9 8 7][6 5 4][3 2 1]] like this.
In the 2nd round they asked: 1. An egg has to be boiled which takes exactly 11 minutes to boil. There are only 2 sand watches available to you one of 9 minutes and the other of 5 minutes. Using only these sand watches boil the egg.
We have a cup of hot coffee and a small cold milk out of the fridge. The room temperature is in between these two. When should we add milk to coffee to get the coolest combination earliest ( at the beginning, in the middle, or at the end)?
If I need to make a cantilever beam 1mm thick and I only have 0.5mm sheet stock. How can I make a beam that has the same properties as the 1mm.
Questions that popped out as I can remember. 1) A cube (1-1-1m) of ice in a room (50C) sitting on a wooden table. the ice is 1m away from the walls around it's 4 sides, except for 1 side is 30cm away. You're given 2 insulating blankets (1m by 1m) that can be used to cover the ice block. The goal is to keep the ice in solid form as long as possible. Where would you put the blankets? 2) 2 rectangular beams, one is Aluminum a by 2b cross-section one is Steel a by b cross-section. If you were to climb a mountain and find these two sticking out on a spot where you need to rest, which one would you latch on to? 3) Interviewee shows a plastic part and asks: How do you think I built this part? What other ways can you think of this part could have been done?
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